I am contemplating buying a cem40 or cem40ec for my Celestron C8 with
I have read Steve333's notes about his cem40ec. I have some questions for Steve or any one who has experience with the cem40.
How much backlash did you measure with the thing right out of the box?
Did you have to make any adjustment to the mount to reduce backlash?
What focal length is your guide scope?
What kind of RMS guiding performance does the whole combination produce?
Thanks very much for any information.